Networking Investigate

Dynamically Tuning Level of Parallelism in Wide Area Data Transfers

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Executive Summary

Using multiple parallel streams for wide area data transfers may yield much better performance than using a single stream, but overwhelming the network by opening too many streams may have an inverse effect. The congestion created by excess number of streams may cause a drop down in the throughput achieved. Hence, it is important to decide on the optimal number of streams without congesting the network. Predicting this 'Magic' number is not straightforward, since it depends on many parameters specific to each individual transfer.

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